CN216417123U - Transmission mechanism of endoscope and endoscope - Google Patents
Transmission mechanism of endoscope and endoscope Download PDFInfo
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- CN216417123U CN216417123U CN202122745124.0U CN202122745124U CN216417123U CN 216417123 U CN216417123 U CN 216417123U CN 202122745124 U CN202122745124 U CN 202122745124U CN 216417123 U CN216417123 U CN 216417123U
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Abstract
The utility model discloses a drive mechanism and endoscope of endoscope, this drive mechanism of endoscope include knob subassembly, driving medium, stop part, cam pack and cam seat, and the driving medium cooperation is in the one end of knob subassembly, and the stop part ends to on the driving medium, and the cam pack rotationally establishes the cooperation on the knob subassembly, and the cam seat is established on the knob subassembly and is cooperated with the cam pack along the length direction slidable of knob subassembly. The cam assembly is provided with a plurality of working intervals which are distributed along the circumferential direction of the cam assembly, and each working interval comprises a first working part and a second working part which are connected; the central angle of the cam corresponding to the first working part is smaller than that of the cam corresponding to the second working part. This drive mechanism of endoscope can eliminate the transmission clearance fast under the condition of guaranteeing the good use of bent angle locking function, reduces invalid stroke, improves operating efficiency and uses and experiences, avoids maloperation or misjudgment.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to a drive mechanism and endoscope of endoscope.
Background
In recent years, endoscopes have been widely used in medical and industrial fields. By operating the operation section of the endoscope, the bending section inserted into the test space can be bent in a plurality of directions, and the position or posture of the imaging device can be adjusted so that the test area can be observed better.
The operating part comprises a bend angle control mechanism for adjusting the bending angle of the bending part. Some of the devices further include a bending angle locking mechanism for fixing the current bending angle, so as to prevent the bending portion from being influenced by other various operations or various external forces of the detected space to cause random changes of the bending angle.
The core part of the commonly used corner locking mechanism is a cam structure or a wedge-shaped structure and the like with an inclined plane. The locking mechanism converts the rotary motion of the operating piece into linear motion, so that the corner control mechanism is squeezed, clamped and/or generates friction force, and the movement of the corner control mechanism is hindered or even prevented to a certain extent, thereby realizing the locking function of the corner.
With the prior art, when the operating member has deviated far from the unlocking position, the mechanism is still in a fully unlocked state, i.e. the operating member has rotated through a large angle and has not yet acted upon the bend angle control mechanism. That is, the idle stroke of the existing operation element is too large, which may affect the user experience, even the user's judgment of the current state of the endoscope, thereby causing the occurrence of misoperation.
SUMMERY OF THE UTILITY MODEL
A first object of the utility model is to provide a drive mechanism of endoscope, this drive mechanism of endoscope can eliminate the transmission clearance fast under the condition of guaranteeing the good use of bent angle locking function, reduces invalid stroke, improves operating efficiency and uses and experiences, avoids maloperation or misjudgment.
A second object of the present invention is to provide an endoscope, which has a high operation efficiency and a good use experience.
For realizing the above technical effect, the technical scheme of the utility model as follows:
the utility model discloses a drive mechanism of endoscope, include: a knob assembly; the transmission piece is matched at one end of the knob component; a stop member which stops against the transmission member; the cam assembly is rotatably arranged and matched on the knob assembly; the cam seat is slidably arranged on the knob assembly along the length direction of the knob assembly and is matched with the cam assembly; wherein: the cam component is provided with a plurality of working sections which are arranged along the circumferential direction of the cam component, each working section comprises a first working part and a second working part which are connected, the first working part drives the cam seat to move towards the stop piece during the rotation of the cam component, and the second working part drives the cam seat to compress the stop piece so as to lock the transmission piece; the central angle of the cam corresponding to the first working part is smaller than that of the cam corresponding to the second working part.
In some embodiments, each of the working zones further comprises a first horizontal portion connected to an end of the first working portion distal from the second working portion, the first horizontal portion for maintaining the cam seat furthest from the stop during rotation of the cam assembly.
In some embodiments, each of the working zones further comprises a second horizontal portion connected to an end of the second working portion distal from the first working portion for holding the cam seat pressed against the stop during rotation of the cam assembly.
In some embodiments, one of the cam module and the cam base is provided with a limiting portion for limiting rotation of the cam module relative to the cam base, and the limiting portion stops against the other of the cam base and the cam module after the second working portion drives the cam base to compress the stop member to lock the transmission member during rotation of the cam module.
In some embodiments, the top wall of the first working portion and the second working portion is a fan-shaped helicoid, a bar-shaped helicoid, or a circular arc helicoid.
In some embodiments, the driving mechanism of the endoscope further includes a housing, the cam seat, the driving member and the stop member are located inside the housing, the cam assembly is disposed on the housing, and one end of the knob assembly extends into the housing to cooperate with the driving member and the stop member.
In some specific embodiments, the cam assembly comprises: the cam body is rotatably matched on the knob assembly and is matched with the cam seat; the shifting rod is sleeved on the cam body and located on the outer side of the shell, and the shifting rod can drive the cam body to rotate.
In some more specific embodiments, a protruding portion is disposed in the housing, one end of the cam body abuts against an end surface of the protruding portion, the cam seat is sleeved on the protruding portion, one of the cam seat and the protruding portion is provided with a guide rib, and the other of the cam seat and the protruding portion is provided with a guide groove matched with the guide rib.
In some embodiments, the knob assembly comprises: the knob piece is arranged on the outer side of the shell; one end of the rotating shaft is rotatably arranged in the shell, and the other end of the rotating shaft is detachably arranged on the knob piece; wherein: the knob piece can drive the rotating shaft to rotate so as to drive the transmission piece to rotate.
The utility model discloses an endoscope, including the aforementioned drive mechanism of endoscope.
The utility model discloses a drive mechanism's of endoscope beneficial effect because the work area of the drive mechanism's of endoscope cam body includes first work portion and the second work portion that two central angles are different, under the good condition of using of ensureing bent angle locking function, can eliminate the transmission clearance fast, reduces invalid stroke, improves operating efficiency and uses and experiences, avoids maloperation or misjudgement.
The utility model discloses an endoscope's beneficial effect: due to the transmission mechanism of the endoscope, the endoscope is high in operation efficiency and good in use experience.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural view of a transmission mechanism of an endoscope according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a stop member of a drive mechanism of an endoscope in accordance with an embodiment of the present invention being compressed;
FIG. 3 is a cross-sectional view of the transmission mechanism of the endoscope of an embodiment of the present invention with the stop released;
fig. 4 is a schematic structural view of a first cam body of a transmission mechanism of an endoscope according to an embodiment of the present invention;
FIG. 5 is a cam deployment view of the cam body of FIG. 4;
fig. 6 is a schematic structural view of a second cam body of the transmission mechanism of the endoscope of the present invention;
fig. 7 is a schematic structural view of a third cam body of the transmission mechanism of the endoscope of the present invention;
fig. 8 is a schematic structural view of a fourth cam body of the transmission mechanism of the endoscope of the present invention.
Reference numerals:
1. a knob assembly; 11. a knob member; 12. a rotating shaft;
2. a transmission member;
3. a stopper;
4. a cam assembly; 41. a cam body; 411. a first working section; 412. a second working section; 413. a first horizontal portion; 414. a second horizontal portion; 415. a limiting part; 42. a deflector rod;
5. a cam seat;
6. a housing; 61. a raised portion.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The transmission mechanism of the endoscope of the embodiment of the present invention is described below with reference to fig. 1 to 8.
The utility model discloses a drive mechanism of endoscope, as shown in fig. 1-3, the drive mechanism of the endoscope of this embodiment includes knob subassembly 1, driving medium 2, stop part 3, cam module 4 and cam seat 5, and driving medium 2 cooperates in the one end of knob subassembly 1, and stop part 3 ends to on driving medium 2, and cam module 4 rotationally cooperates on knob subassembly 1, and cam seat 5 establishes on knob subassembly 1 and cooperates with cam module 4 along the length direction slidable of knob subassembly 1. As shown in fig. 4-5, the cam module 4 has a plurality of working sections arranged along the circumferential direction thereof, each working section includes a first working portion 411 and a second working portion 412 connected with each other, the first working portion 411 drives the cam seat 5 to move towards the stopper 3 during the rotation of the cam module 4, and the second working portion 412 drives the cam seat 5 to compress the stopper 3 to lock the driving member 2; the cam central angle corresponding to the first working portion 411 is smaller than the cam central angle corresponding to the second working portion 412.
It should be noted that, during the actual working process, the operator can rotate the knob assembly 1 to drive the transmission member 2 to rotate, and the transmission member 2 can wind or release the traction rope connected with the transmission member to bend the snake bone during the rotation process.
It will be appreciated that, during the rotation of the cam assembly 4 by the operator, the rotation may be translated into a horizontal movement of the cam seat 5 along the length of the knob assembly 1 due to the cooperation of the cam assembly 4 and the cam seat 5. Therefore, the cam base 5 can move in the direction away from or close to the transmission piece 2 during the rotation of the cam assembly 4, and when the cam base 5 presses the stop piece 3, the friction force between the stop piece 3 and the transmission piece 2 is large, so that the transmission piece 2 is locked. At the moment, the knob component 1 is rotated, and the transmission piece 2 cannot rotate; when the cam seat 5 is separated from the stop part 3, the friction force between the stop part 3 and the transmission part 2 is small or even disappears, so that the transmission part 2 is released, and at the moment, the knob component 1 is rotated, and the transmission part 2 rotates, so that the snake bone is bent.
It should be added that, in practical design, the stop member 3 may be sleeved on the knob assembly 2 or on the cam seat 5, the stop member 3 may be abutted on an end surface of the transmission member 3 or an inner circumferential surface of the transmission member 3, as long as the stop member 3 can lock the transmission member 3 in a compressed state, and an installation position of the stop member may be selected according to practical requirements. In addition, the stopper 3 may be a circlip or an elastic stopper, and the specific type and material of the stopper 3 may be selected according to actual needs, and the specific type and material of the stopper 3 are not limited herein.
In addition, in the actual operation process, when the cam assembly 4 rotates, the compression stop member 3 may be directly the cam seat 5, or may be another structure attached to the cam seat 5, and may also be a protrusion mechanism provided on the knob assembly 1, in the latter two possibilities, the cam assembly 4 rotates to drive the cam seat 5 to slide, so that the cam seat 5 can drive another mechanism attached to the cam seat 5 to move so as to compress the stop member 3, or the cam seat 5 drives the knob assembly 1 to move along the axial direction thereof so as to compress the stop member 3, and the specific manner may be selected according to the actual needs.
In the present invention, the working area of the cam module 4 includes the first working portion 411 and the second working portion 412 which are different in size, and when the first working portion 411 of the cam module 4 is used for driving, the cam base 5 moves from the position of complete unlocking toward the position close to the stopper 3, and when the cam base 5 is stopped on the stopper 3, the second working portion 412 starts to function as driving. Since the cam central angle corresponding to the first working portion 411 is smaller than the cam central angle corresponding to the second working portion 412. That is, in actual operation, the cam seat 5 moves from the fully unlocked position to the position just stopped against the stopper 3, the angle through which the cam member 4 rotates is small, and the cam seat 5 moves from the position just stopped against the stopper 3 to the position completely pressing against the stopper 3 to lock the driver 2, the angle through which the cam member 4 rotates is large. This not only shortens the lost motion of the cam carrier 5, but also increases the pressing force of the cam carrier 5 against the stop 3. In summary, in the transmission mechanism of the endoscope of the present embodiment, the working area of the cam body 41 includes the first working portion 411 and the second working portion 412 with different central angles, so that under the condition of ensuring good use of the corner locking function, the transmission gap can be eliminated quickly, the invalid stroke can be reduced, the operation efficiency and the use experience can be improved, and the misoperation or misjudgment can be avoided.
Optionally, the working intervals of the cam body 41 of the present embodiment may be 2 to 4, preferably 3, and of course, the specific number of the working areas may be designed according to the transmission requirement.
In some embodiments, as shown in fig. 4-5, each working area further comprises a first horizontal portion 413, the first horizontal portion 413 is connected to an end of the first working portion 411 away from the second working portion 412, and the first horizontal portion 413 is used for keeping the cam seat 5 farthest away from the stop member 3 during the rotation of the cam assembly 4. It can be understood that if the first horizontal portion 413 is not provided, the first working portion 411 and the second working portion 412 of the two adjacent working sections are directly connected together, and because the radian and height of the first working portion 411 and the second working portion 412 are different, on one hand, when the cam base 5 moves to the farthest position from the stop member 3, if the cam assembly 4 is rotated in the same direction, the cam assembly 4 will immediately get stuck without any buffer area, on the other hand, if the cam assembly 4 is slightly rotated in the opposite direction, the cam base 5 will immediately leave the unlocking position, and the safety risk in use is raised in the actual operation process. In the embodiment, the first horizontal portion 413 is connected to the end of the first working portion 411 away from the second working portion 412, and when the cam seat 5 moves to the farthest position from the stop member 3, if the cam assembly 4 is rotated in the same direction, the first horizontal portion 413 provides a buffer area, so that the probability of the cam assembly 4 being stuck is reduced; if the cam component 4 is rotated reversely, the cam seat 5 can not be separated from the unlocking position immediately, thereby ensuring that the cam seat 5 can be stably kept at the position farthest away from the stop piece 3 and improving the use safety of the transmission mechanism of the whole endoscope.
It should be additionally noted that, in the present invention, the shape and size of the first horizontal portion 413 may be designed according to actual rotation requirements, and parameters of the first horizontal portion 413 are not specifically limited herein.
In some embodiments, as shown in fig. 4-5, each working space further comprises a second horizontal portion 414, the second horizontal portion 414 is connected to an end of the second working portion 412 away from the first working portion 411, and the second horizontal portion 414 is used for holding the cam seat 5 at the pinch stop 3 during rotation of the cam assembly 4. It can be understood that if the second horizontal portion 414 is not provided, the second working portion 412 and the first working portion 411 of two adjacent working sections are directly connected together, and because the radian and height of the second working portion 412 and the first working portion 411 are different, on one hand, when the cam base 5 moves to the position of pressing the stop member 3, if the cam assembly 4 is rotated in the same direction, the cam assembly 4 will immediately block without any buffer area, on the other hand, if one cam assembly 4 is rotated slightly in the opposite direction, the cam base 5 will immediately leave the position of pressing the stop member 3, thereby raising the safety risk in use during the actual operation. In the embodiment, the second horizontal portion 414 is connected to the end of the second working portion 412 away from the first working portion 411, and when the cam base 5 moves to the position of pressing the stop member 3, if the cam assembly 4 is rotated in the same direction, the second horizontal portion 414 provides a buffer area, which reduces the probability of the cam assembly 4 being jammed; if the cam component 4 is rotated reversely, the cam seat 5 will not be separated from the pressing position immediately, thus ensuring the cam seat 5 to keep the position of the pressing stop piece 3 stably and improving the use safety of the transmission mechanism of the whole endoscope.
It should be additionally noted that, in the present invention, the shape and size of the second horizontal portion 414 may be designed according to actual rotation requirements, and the parameters of the second horizontal portion 414 are not specifically limited herein.
In some embodiments, as shown in fig. 8, one of the cam module 4 and the cam seat 5 is provided with a limiting portion 415, the limiting portion 415 is used for limiting the rotation of the cam module 4 relative to the cam seat 5, and the limiting portion 415 is stopped against the other of the cam seat 5 and the cam module 4 after the second working portion 412 drives the cam seat 5 to compress the stopper 3 to lock the transmission member 2 during the rotation of the cam module 4. It can be understood that the limiting portion 415 can limit the starting point and the end point of the rotation of the cam assembly 4, and avoid the occurrence of the phenomenon that the cam assembly 4 excessively rotates, thereby ensuring the use stability of the transmission mechanism of the internal endoscope of the embodiment of the present invention.
It should be noted that the limiting portion 415 may be a single protrusion structure provided on the cam module 4 and the cam seat 5, or may be a single limiting surface, and the specific shape may be selected according to actual needs, and the limiting portion 415 may be an independent feature, may be formed by extending an operating interval of the cam module 4 or an engaging interval of the cam seat 5 and the cam module 4, or may be selected according to actual needs.
In some embodiments, as shown in fig. 4, 6 and 7, the top walls of the first and second working parts 411 and 412 are a fan-shaped spiral, a bar-shaped spiral or a circular arc-shaped spiral. It can be understood that the top walls of the first working portion 411 and the second working portion 412 are fan-shaped spiral surfaces, which can ensure the driving action of the cam assembly 4 on the cam seat 5, thereby ensuring that the cam seat 5 can stably slide along the length direction of the knob assembly 1. And the top walls of the first working part 411 and the second working part 412 are strip-shaped helicoids or arc-shaped helicoids, which can reduce friction between the cam assembly 4 and the cam seat 5 while ensuring stable driving of the cam seat 5, thereby facilitating rotation of the cam assembly 4 relative to the cam seat 5.
Of course, it should be additionally noted herein that the top wall of the engagement section of the cam seat 5 engaged with the cam component 4 may also be a sector-shaped helical surface, a strip-shaped helical surface, or a circular arc-shaped helical surface, which may be selected according to actual needs.
In some embodiments, the driving mechanism of the endoscope further includes a housing 6, the cam seat 5, the driving member 2 and the stop member 3 are located inside the housing 6, the cam assembly 4 is disposed on the housing 6, and one end of the knob assembly 1 extends into the housing 6 to cooperate with the driving member 2 and the stop member 3. It can be understood that the shell 6 plays a role of supporting the cam assembly 4 and the knob assembly 1 on one hand, and encapsulates the cam seat 5, the transmission piece 2 and the stop piece 3 in a relatively closed cavity on the other hand, thereby avoiding the entry of external impurities and improving the use reliability of the transmission mechanism of the endoscope.
In some embodiments, the cam assembly 4 includes a cam body 41 and a lever 42, the cam body 41 is rotatably engaged with the knob assembly 1 and engaged with the cam seat 5, the lever 42 is disposed on the cam body 41 and located outside the housing 6, and the lever 42 can rotate the cam body 41. It can be understood that, if cam assembly 4 only includes cam body 41, then in the actual work process, operating personnel just need direct drive cam body 41 to rotate, can promote operating personnel's the operation degree of difficulty greatly like this, waste time and energy, and the driving lever 42 that this embodiment adds can drive cam body 41 to rotate, that is to say, in the actual operation process, the user only need operate driving lever 42 can, it is very convenient to operate.
It should be additionally noted that, in the embodiment of the present invention, the shape of the shift lever 42 may be selected according to actual needs, and the shape of the shift lever 42 is not limited herein.
In some more specific embodiments, a protruding portion 61 is provided in the housing 6, one end of the cam body 41 abuts against an end surface of the protruding portion 61, the cam seat 5 is sleeved on the protruding portion 61, one of the cam seat 5 and the protruding portion 61 is provided with a guiding rib, and the other of the cam seat 5 and the protruding portion 61 is provided with a guiding groove matched with the guiding rib. It can be understood that, according to the foregoing, when the cam body 41 rotates, the cam seat 5 needs to slide along the length direction of the knob assembly 1, and the cooperation between the guiding rib and the guiding groove can limit the sliding direction of the cam seat 5, so as to prevent the cam seat 5 from rotating, thereby ensuring that the cam seat 5 can stably slide along the length direction of the knob assembly 1, and thus completing the function of locking or releasing the transmission member 2.
It should be added that the distribution of the guiding rib and the guiding groove can be selected according to the actual requirement, in some embodiments, the guiding rib is arranged on the protruding part 61, and the guiding groove is arranged on the cam seat 5; in some embodiments, the guide rib is provided on the cam base 5, and the guide groove is provided on the boss 61.
In some embodiments, as shown in fig. 1, the knob assembly 1 includes a knob member 11 and a rotation shaft 12, the knob member 11 is disposed outside the housing 6, one end of the rotation shaft 12 is rotatably disposed in the housing 6, and the other end is detachably mounted on the knob member 11. The knob member 11 can drive the rotating shaft 12 to rotate so as to drive the transmission member 2 to rotate. It can be understood that, if the knob assembly 1 only includes the rotating shaft 12, when the driving member 2 is driven to rotate, the operator can only rotate the rotating shaft 12, and the operation is not changed, the knob member 11 added in the present embodiment can facilitate the operation of the operator, thereby improving the user satisfaction of the driving mechanism of the endoscope of the present embodiment.
It should be added here that in practical structure, the knob assembly 1 may only include the knob member 11, the rotating shaft 12 and the transmission member 2 as an integral molding. Or, the knob assembly 1 includes a knob member 11 and a rotating shaft 12, and the rotating shaft 12 and the knob member 11 may be an integrally formed member or two separately assembled collar members, which may be specifically selected according to actual requirements.
Example (b):
the driving mechanism of the endoscope according to one embodiment of the present invention will be described with reference to fig. 1 to 8.
As shown in fig. 1 to 2, the driving mechanism of the endoscope includes a knob assembly 1, a driving member 2, a stopper 3, a cam assembly 4, a cam seat 5, and a housing 6, and the cam seat 5, the driving member 2, and the stopper 3 are located inside the housing 6. Be equipped with bellying 61 on the casing 6, be equipped with two spacing muscle on the bellying 61, knob subassembly 1 includes knob piece 11 and pivot 12, and knob piece 11 is established in the outside of casing 6, and the one end of pivot 12 is rotationally established in casing 6, and the other end is being installed on knob piece 11 detachablely. The driving member 2 is sleeved at one end of the rotating shaft 12 extending into the casing 6, and the stop member 3 is sleeved at one end of the rotating shaft 12 extending into the casing 6 and stops against the end face of the driving member 2. The cam assembly 4 includes a cam body 41 and a shift lever 42, the cam body 41 is rotatably sleeved on the rotating shaft 12, the shift lever 42 is sleeved on the cam body 41 and is located outside the housing 6, and the shift lever 42 can drive the cam body 41 to rotate. The cam seat 5 is sleeved on the boss 61, and a limit groove matched with the two limit ribs is arranged on the cam seat 5. The cam seat 5 is slidably provided on the rotary shaft 12 in the longitudinal direction of the rotary shaft 12 and engages with the cam module 4.
As shown in fig. 4 to 5, the cam body 41 has three working sections arranged along the circumferential direction thereof, each of the working sections includes a first horizontal portion 413, a first working portion 411, a second working portion 412 and a second horizontal portion 414 connected to each other, and during the rotation of the cam assembly 4, the first working portion 411 drives the cam base 5 to move toward the stopper 3, and the second working portion 412 drives the cam base 5 to compress the stopper 3 to lock the driving member 2. The first horizontal portion 413 serves to hold the cam holder 5 farthest from the stopper 3, and the second horizontal portion 414 serves to hold the cam holder 5 at the pinch stopper 3. The cam central angle corresponding to the second working portion 412 is greater than the cam central angle corresponding to the second horizontal portion 414, the cam central angle corresponding to the second horizontal portion 414 is equal to the cam central angle corresponding to the first horizontal portion 413, and the cam central angle corresponding to the first horizontal portion 413 is greater than the cam central angle corresponding to the first working portion 411. The first horizontal portion 413, the first working portion 411, the second working portion 412, and the second horizontal portion 414 of the present embodiment are all fan-shaped surfaces.
In the transmission mechanism of the endoscope of the present embodiment, since the working area of the cam assembly 4 of the transmission mechanism of the endoscope includes the first working portion 411 and the second working portion 412 having different central angles, the transmission gap can be quickly eliminated, the invalid stroke is reduced, the operation efficiency and the use experience are improved, and the misoperation or misjudgment is avoided under the condition of ensuring the good use of the corner locking function.
The cam body 41 of the present embodiment may also have the following structures:
the first method comprises the following steps: as shown in fig. 6, the first horizontal portion 413, the first working portion 411, the second working portion 412, and the second horizontal portion 414 are all strip-shaped helicoids;
and the second method comprises the following steps: as shown in fig. 7, the first horizontal portion 413, the first working portion 411, the second working portion 412, and the second horizontal portion 414 are all arc helicoids;
and the third is that: as shown in fig. 8, the first horizontal portion 413, the first working portion 411, the second working portion 412, and the second horizontal portion 414 are all strip-shaped helical surfaces, and a limiting portion 415 is disposed at an end of the second horizontal surface far from the second working portion 412.
Of course, the structure of the cam body 41 of the present embodiment can also be selected according to actual needs, and is not limited to the above three types.
The utility model discloses an endoscope, which comprises a transmission mechanism of the endoscope in the front.
The utility model discloses an endoscope, owing to have the foretell drive mechanism of endoscope, the operating efficiency of this endoscope is higher, uses and experiences better.
In the description herein, references to the description of "some embodiments," "other embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (10)
1. A drive mechanism for an endoscope, comprising:
a knob assembly (1);
the transmission piece (2) is matched with one end of the knob component (1);
a stop member (3), wherein the stop member (3) is stopped against the transmission member (2);
the cam assembly (4), the cam assembly (4) is rotatably matched on the knob assembly (1);
the cam seat (5) is arranged on the knob assembly (1) in a sliding manner along the length direction of the knob assembly (1) and is matched with the cam assembly (4); wherein:
the cam component (4) is provided with a plurality of working intervals arranged along the circumferential direction of the cam component, each working interval comprises a first working part (411) and a second working part (412) which are connected, the first working part (411) drives the cam seat (5) to move towards the stop piece (3) during the rotation of the cam component (4), and the second working part (412) drives the cam seat (5) to compress the stop piece (3) so as to lock the transmission piece (2);
the central angle of the cam corresponding to the first working part (411) is smaller than the central angle of the cam corresponding to the second working part (412).
2. The transmission mechanism of an endoscope according to claim 1, characterized in that each working space further comprises a first horizontal portion (413), said first horizontal portion (413) being connected at an end of said first working portion (411) remote from said second working portion (412), said first horizontal portion (413) being adapted to keep said cam seat (5) furthest from said stop member (3) during rotation of said cam assembly (4).
3. The transmission mechanism of an endoscope according to claim 1, characterized in that each working space further comprises a second horizontal portion (414), said second horizontal portion (414) being connected to an end of said second working portion (412) remote from said first working portion (411), said second horizontal portion (414) being adapted to hold said cam seat (5) pressed against said stop member (3) during rotation of said cam assembly (4).
4. The transmission mechanism of an endoscope according to claim 1, characterized in that one of the cam module (4) and the cam seat (5) is provided with a limiting portion (415), the limiting portion (415) is used for limiting the rotation of the cam module (4) relative to the cam seat (5), and during the rotation of the cam module (4), the second working portion (412) drives the cam seat (5) to compress the stop member (3) to lock the transmission member (2), and then the limiting portion (415) is stopped against the other of the cam seat (5) and the cam module (4).
5. The transmission mechanism of an endoscope according to claim 1, characterized in that the top wall of the first working portion (411) and the second working portion (412) is a sector helicoid, a bar helicoid or a circular arc helicoid.
6. The transmission mechanism of the endoscope according to claim 1, further comprising a housing (6), wherein the cam seat (5), the transmission member (2) and the stop member (3) are located inside the housing (6), the cam assembly (4) is disposed on the housing (6) in a penetrating manner, and one end of the knob assembly (1) extends into the housing (6) to be matched with the transmission member (2) and the stop member (3).
7. The drive mechanism of an endoscope according to claim 6, characterized in that the cam assembly (4) comprises:
the cam body (41), the cam body (41) is rotatably matched on the knob component (1) and is matched with the cam seat (5);
the shifting rod (42) is sleeved on the cam body (41) and is positioned on the outer side of the shell (6), and the shifting rod (42) can drive the cam body (41) to rotate.
8. The transmission mechanism of the endoscope according to claim 7, wherein a protruding portion (61) is provided in the housing (6), one end of the cam body (41) abuts against an end surface of the protruding portion (61), the cam seat (5) is sleeved on the protruding portion (61), one of the cam seat (5) and the protruding portion (61) is provided with a guiding rib, and the other of the cam seat (5) and the protruding portion (61) is provided with a guiding groove matched with the guiding rib.
9. The transmission mechanism of an endoscope according to claim 6, characterized in that said knob assembly (1) comprises:
the knob piece (11), the said knob piece (11) is set up in the outside of the said body (6);
a rotating shaft (12), one end of the rotating shaft (12) is rotatably arranged in the shell (6), and the other end of the rotating shaft (12) is detachably arranged on the knob piece (11); wherein:
the knob piece (11) can drive the rotating shaft (12) to rotate so as to drive the transmission piece (2) to rotate.
10. An endoscope, characterized in that it comprises the transmission mechanism of the endoscope according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122745124.0U CN216417123U (en) | 2021-11-10 | 2021-11-10 | Transmission mechanism of endoscope and endoscope |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122745124.0U CN216417123U (en) | 2021-11-10 | 2021-11-10 | Transmission mechanism of endoscope and endoscope |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117426734A (en) * | 2023-12-20 | 2024-01-23 | 深圳市宏济医疗技术开发有限公司 | Bending opening and closing control mechanism and endoscope |
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2021
- 2021-11-10 CN CN202122745124.0U patent/CN216417123U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117426734A (en) * | 2023-12-20 | 2024-01-23 | 深圳市宏济医疗技术开发有限公司 | Bending opening and closing control mechanism and endoscope |
| CN117426734B (en) * | 2023-12-20 | 2024-03-19 | 深圳市宏济医疗技术开发有限公司 | Bending opening and closing control mechanism and endoscope |
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